The 4G++ Project Objectives

The main objective of the 4G++ project is to explore various technical challenges in Beyond 3.5G and 4G wireless systems as represented by the LTE and LTE-Advanced systems. We select a set of hot research topics and investigate the associated research problems with the goal of delivering highly innovative solutions. In general, the project objectives can be outlined as follows:

1. Provide innovative schemes for capacity boosting in LTE and LTE-Advanced Systems in the following areas:

a. Channel-Aware Radio Resource Management and Scheduling: We tackle issues related to power control and allocation, subchannel allocation, fair allocation, quality of service scheduling, channel-aware and energy-aware scheduling. The focus in this area is LTE uplink, CoMP, and Carrier Aggregation.

b. Inter-cell Interference Coordination: Techniques to mitigate interference in OFDMA systems are key to providing good capacity and enhanced coverage particularly on cell edges. Viable approaches include adaptive fractional frequency reuse, power control, opportunistic spectrum access, and interference alignment. Moreover, Coordinated Multipoint Transmission/Reception (CoMP) is a form of distributed antenna system between multiple sites to combat interference and can be considered as a form of a cooperative communication. In CoMP, transmission/reception is dynamically coordinated among multiple, geographically separated antennas in order to minimize the overall interference encountered at the UE. Applying CoMP in LTE-Advanced is considered as one of the key enablers for capacity boosting.

c. Relaying and Network Coding: Relaying is a key technology to enhance the downlink capacities in 4G systems. This is achieved via simultaneous transmission of the downlink from more than one base station or dedicated relay nodes. Network coding is a technique that can be used to improve the capacity of 4G systems using relays where relays can send a combination of messages from different sources rather than simply forwarding the individual messages.

2. Build research capacity for young researchers and emphasize the values of working in a research team.

3. Establish a base for a “Center of Excellence” in wireless systems research and development in Egypt.

4. Provide a means to enhance the related curriculum on graduate and under-graduate wireless systems, communications, and networks in three of the most influential departments in two public universities in Egypt.